function n = refladder(Hd)
%REFLADDER Return reference Ladder.


%   Author(s): R. Losada
%   Copyright 1988-2003 The MathWorks, Inc.
%   $Revision: 1.1.6.2 $  $Date: 2004/04/12 23:58:18 $

n = Hd.refladder;

